feat: add codec tests

Author: sosweetham

infrastructure/w3id/tests/utils/codec.test.ts

@@ -0,0 +1,34 @@
+import {
+  uint8ArrayToHex,
+  hexToUint8Array,
+  stringToUint8Array,
+} from "../../src/utils/codec";
+import falso from "@ngneat/falso";
+import { describe, test, expect } from "vitest";
+
+describe("Codec", () => {
+  test("uint8ArrayToHex", () => {
+    const input = new Uint8Array([1, 2, 3, 4]);
+    const expected = "01020304";
+    expect(uint8ArrayToHex(input)).toBe(expected);
+  });
+
+  test("hexToUint8Array", () => {
+    const input = "01020304";
+    const expected = new Uint8Array([1, 2, 3, 4]);
+    expect(hexToUint8Array(input)).toEqual(expected);
+  });
+
+  test("hexToUint8Array (Odd Length)", () => {
+    const input = "010203045";
+    expect(() => hexToUint8Array(input)).toThrow(
+      "Hex string must have an even length",
+    );
+  });
+
+  test("stringToUint8Array", () => {
+    const input = "hello";
+    const expected = new Uint8Array([104, 101, 108, 108, 111]);
+    expect(stringToUint8Array(input)).toEqual(expected);
+  });
+});